Hi Oliver,

I take note of your modifications for my next project, as for file size, my experience as been that editing in avchd (codec h264) is nearly impossible because the codec is to cpu intensive to decompress and to bring to the composer window. Working with Mjpeg is a trade off that has worked for me. It is lighter on the cpu but more data is read from the hard drive.

Cheers, Félix-A.


Le 01/09/12 00:22, oliver lynton a écrit :
Hi Felix-A

I tried your code (below) and had issues with the -qscale 0 (must be 0.1
to 255) - replaced with -sameq. Also removed the -pix_fmt yuvj420p for
'missing argument'. Also had issues with AC-3 audio so changed the
audio. Result:

ffmpeg -i input.MTS -vcodec mjpeg -sameq -s 1920x1080 -acodec pcm_s16le
output.mov

This appears to work well though the resulting file is still double the
size of the original. The handle -s 1920x1080 is also not needed unless
you are changing the dimensions of the original.

Still new to this but muddling through.

Cheers, Oliver



On Fri, 2012-08-31 at 17:34 -0400, felix wrote:
Hi James

I have not edit for a while now, but usually i used ffmep to transcode
the MTS file to .mov container with MJPEG video and the same audio

ffmpeg -i input_file -vcodec mjpeg -qscale 0 -s 1920x1080 -pix_fmt
yuvj420p -acodec copy output_file

I use a .mov extension for the output file

I explained my workflow in this archive
http://www.mail-archive.com/[email protected]/msg13210.html

Félix-A.


Le 31/08/12 15:21, James Moe a écrit :
On 08/30/2012 03:22 PM, Haldun ALTAN wrote:
you can use proxy editing see grandma for that
works great
    I'll give it go.

also mjpeg is much more lighter then DNXHD

    I tried that. Cinelerra rejected the MJPEG file.



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